1 /*
2 * Copyright (c) Huawei Technologies Co., Ltd. 2014-2020. All rights reserved.
3 * Licensed under Mulan PSL v2.
4 * You can use this software according to the terms and conditions of the Mulan PSL v2.
5 * You may obtain a copy of Mulan PSL v2 at:
6 * http://license.coscl.org.cn/MulanPSL2
7 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
8 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
9 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
10 * See the Mulan PSL v2 for more details.
11 * Description: vfwscanf_s function
12 * Author: lishunda
13 * Create: 2014-02-25
14 */
15
16 #ifndef SECUREC_FOR_WCHAR
17 #define SECUREC_FOR_WCHAR
18 #endif
19
20 #include "secinput.h"
21
22 /*
23 * <FUNCTION DESCRIPTION>
24 * The vfwscanf_s function is the wide-character equivalent of the vfscanf_s function
25 * The vfwscanf_s function reads data from the current position of stream into
26 * the locations given by argument (if any). Each argument must be a pointer
27 * to a variable of a type that corresponds to a type specifier in format.
28 * format controls the interpretation of the input fields and has the same form
29 * and function as the format argument for scanf.
30 *
31 * <INPUT PARAMETERS>
32 * stream Pointer to FILE structure.
33 * format Format control string, see Format Specifications.
34 * argList pointer to list of arguments
35 *
36 * <OUTPUT PARAMETERS>
37 * argList the converted value stored in user assigned address
38 *
39 * <RETURN VALUE>
40 * Each of these functions returns the number of fields successfully converted
41 * and assigned; the return value does not include fields that were read but
42 * not assigned. A return value of 0 indicates that no fields were assigned.
43 * return -1 if an error occurs.
44 */
vfwscanf_s(FILE * stream,const wchar_t * format,va_list argList)45 int vfwscanf_s(FILE *stream, const wchar_t *format, va_list argList)
46 {
47 int retVal; /* If initialization causes e838 */
48 SecFileStream fStr;
49
50 if (stream == NULL || format == NULL) {
51 SECUREC_ERROR_INVALID_PARAMTER("vfwscanf_s");
52 return SECUREC_SCANF_EINVAL;
53 }
54 if (stream == SECUREC_STREAM_STDIN) {
55 return vwscanf_s(format, argList);
56 }
57
58 SECUREC_LOCK_FILE(stream);
59 SECUREC_FILE_STREAM_FROM_FILE(&fStr, stream);
60 retVal = SecInputSW(&fStr, format, argList);
61 SECUREC_UNLOCK_FILE(stream);
62 if (retVal < 0) {
63 SECUREC_ERROR_INVALID_PARAMTER("vfwscanf_s");
64 return SECUREC_SCANF_EINVAL;
65 }
66 return retVal;
67 }
68
69